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Electrons: Electron Configuration using Periodic Table

Added Nov 01, 2017 •

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okay this tutorial focuses on driving electronic configurations from the structure of the periodic table and if you're not yet familiar with electron configurations themselves click here for a tutorial and four how to abbreviate electron configurations with noble gases click here alright here we go so the outer electrons are given by the number of the. As you go across from one mountain to another you just keep on adding one more lecture and where is that electron going that is given by the sublevels shown here the New Order sympathy goes all of these elements have their last electron going in one us so they're all going to end in s Wonder outer electrons these we've added one more to us so they're all going to end in s to an these are all going to end in D1 D2 etcetera you've got all the way up to d-10 and then finally in the p-block you start feeling the P orbitals so all of those elements their layout or electrons would be P1 P2 Etc here we've got up to pee 6 those the noble gases except for helium which doesn't have any peel electrons it just puts its second electron in 1s so let's just pick a random element for example that one right there we don't even need to look at the periodic table if you understand the organization of the table to know what electron configuration will have it's going to end in p v and the period that it's in tells us which P it's going to be to pee so it's going to end in two piece five and everything that comes before that is going to be also filled so during the cab 2 in 1 S2 into us and Dad and finally five and to pee so this is the configuration of this element whatever it is and it happens to be worried have something a little more complicated so here we're going to be going across the D elements and when the Pichu calm we're in. Number for so we're going to fill up all of the orbital's UP24 P2 so let's do that search that want us to 2 us-22 P 63023 pill 64 s23rd 10 and then finally for pee to take a look to see if we could have abbreviated that this is the electron configuration of argon and so what we could have done was simply argon for us to 3D 10 for P2 So to avoid this altogether by looking at the periodic table where at this moment right here just simply look at the noble gas that comes before it are gone and that's going to be the noble gas used in the abbreviation and then all you're doing is feeling across the next. until you get to the element you want so let's try that again with picking an element we don't even know what it is we've got the cat d-10 they're d9g ate so we know it's going to end in 48 what is the gas that comes in the period before that that would be Krypton and so we would write Krypton plus everything that leads up to that box so let's do that Krypton and then we're just going to go across 5S to and then 4D we've got eight and that just happens to be Palladium PD so once you understand the rangement of the periodic table and how the blocks are so vs Black is here with deep black is here the P black is here yep black is here we have the helium exception and if you just simply look at the number of the. that tells you where you going with your electron configurations keeping in mind that all the D. Are going to be one less than the. Row and that's the f. I will be two less than the row

Uploaded by Laura Houston.

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Electrons: Electron Configuration using Periodic Table

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